| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been keeping a | 22 |
|
| 2 | [verb] been keeping a | 14 |
|
| 3 | [vb past] been keeping a | 11 |
|
| 4 | had been keeping a | 9 |
|
| 5 | [verb] been keeping an | 8 |
|
| 6 | [vb base] been keeping a | 6 |
|
| 7 | 've been keeping a | 5 |
|
